Tin(IV) chloride pentahydrate is widely used as a catalyst in organic synthesis, particularly in Friedel-Crafts reactions for alkylation and acylation processes. It is also employed in the production of specialty chemicals, such as pharmaceuticals and agrochemicals, where it facilitates the formation of complex molecular structures. In the textile industry, it serves as a mordant in dyeing processes, helping to fix dyes onto fabrics for improved colorfastness. Additionally, it is utilized in the manufacturing of tin-based coatings and as a precursor for other tin compounds. Its ability to act as a Lewis acid makes it valuable in various chemical transformations and industrial applications.